| Rank | Abbreviation | Meaning |
|---|
| ***** | REEF | Radial Encircled Energy Fraction
| |
| ***** | REEF | Real Estate Employers Federation
| |
| ***** | REEF | Riverside Educational Enrichment Foundation
| |
| **** | REEF | Regression Estimation of Event Probabilities
| |
| **** | REEF | Riverside Elementary Education Foundation
| |
| **** | REEF | Reef Environmental Education Foundation
| |
| **** | REEF | Renewable Energy Equity Fund
| |
| **** | REEF | Real Estate Equity Fund
| |
| **** | REEF | Robinson Elementary Education Foundation
| |
| *** | REEF | Riverside Education Enrichment Foundation
| |
| *** | REEF | Research and Engineering Education Facility
| |
| *** | REEF | Radiological Emergency Evaluation Facility
| |
| ** | REEF | retrospective excess exposure fraction
| |
| * | REEF | Real Estate Educational Foundation
| |
| * | REEF | Regional Environmental Education Forum
| |
| * | REEF | Research Experience Education Facility
| |
| * | REEF | Remedial Ecotoxicological Expeditions Fund
| |
| * | REEF | Race Employment and Education Forum
| |
| * | REEF | Robertson Education Empowerment Foundation
| |
| * | REEF | Resource Employee Equity Fund
| |
| * | REEF | Resource Efficiency Environment Forum
| |
| * | REEF | Radial Encircled Energy Function
| |